R134a/R134a复叠式空气源热泵系统性能分析  

Performance Analysis of R134a/R134a Cascade Air-source Heat Pump System

作　　者：丁雨晴[1] 邹声华[1] 李永存[2,3] 陈光明[2] 江挺候 

机构地区：[1]湖南科技大学能源与安全工程学院,湖南湘潭411201 [2]浙江大学制冷与低温工程研究所,浙江杭州310027 [3]浙江盾安人工环境股份有限公司,浙江诸暨311835

出　　处：《发电与空调》2015年第4期48-51,60,共5页

基　　金：国家自然科学基金资助项目(51274098;51134005);湖南省自然科学基金资助项目(13JJ6057)

摘　　要：介绍了能够替代我国北方燃煤锅炉的R134a/R134a复叠式空气源热泵系统,分析其热力循环过程,并进行了复叠式热泵循环的热力学理论分析。通过计算,得出不同蒸发温度、冷凝温度以及冷凝蒸发器传热温差下,系统COP随蒸发冷凝温度的变化情况,从而得出系统最优低温级冷凝温度和最佳质量流量比。根据理论计算分析得出的结论对复叠式空气源热泵系统进行设计优化。A cascade air-source heat pump system is introduc ed which used R134a and R134a to instead of coal-fired boiler in north China. The thermodynamic cycle process is analyzed. According to the thermodynamic theoretical analysis, the COP change with evaporation condensation temperature is calculated in different evaporation temperature, condensation temperature and heat-transfer temperature difference of condenser-evaporator. An optimum condensation temperature of low temperature cycle and an optimum mass flow ratio is calculated. According to the conclusion of theoretical analysis, we optimize the cascade air-source heat pump system.

关 键 词：复叠式空气源热泵 R134A 蒸发温度 COP 冷凝温度 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]